Gaya APA

West, C, &, E, B, M. (1980). A general service list of english words with semantic frequencies and supplementary word-list for the writing of popular science and technology . London: Longman.

Gaya MLA

West, Compiled, &, Edited, By, Michael. "A general service list of english words with semantic frequencies and supplementary word-list for the writing of popular science and technology". London: Longman, 1980. Text.